Fimbristylis cymosa

R. Brown

Prodr., 228. 1810.

Illustrated
Basionym: Fimbristylis obtusifolia (Lamarck) Kunth 1837
Synonyms: Fimbristylis melanospora Fernald Fimbristylis sintenisii Boeckeler Fimbristylis spathacea Roth Scirpus obtusifolius Lamarck
Treatment appears in FNA Volume 23. Treatment on page 128. Mentioned on page 127, 129.

Plants perennial, cespitose, (5–) 10–60 cm, bases hard, glabrous; rhizomes absent. Leaves polystichous, mostly spreadingexcurved, to 1/2 as long as culms; sheaths usually entire; ligule absent; blades linear, 2–3 mm wide, flat or shallowly involute, margin scabrid, apex blunt. Inflorescences: simple or compound anthelae with numerous small pedunculate clusters of sessile spikelets; scapes linear, distally terete, 1–2 mm thick; involucral-bracts short, usually shorter than inflorescence. Spikelets greenish brown or yellowbrown, ovoid, 2–3 mm; fertile scales broadly ovate, 1–1.5 mm, obtuse or apically notched, midrib not excurrent. Flowers: stamens usually 1; styles 2-fid, slender, glabrous. Achenes dark-brown to nearly black, tumidly obovoid, rarely obscurely 3-ribbed, 1 mm, faintly striate to variously warty, faintly reticulate. 2n = 56.


Phenology: Fruiting all year.
Habitat: Sands of sea beaches, brackish sandy open sites, often disturbed, commonly just in from mangrove or on sandy road shoulders
Elevation: 0–50 m

Distribution

V23 198-distribution-map.jpg

Fla., s Mexico, Central America, South America, Africa, Asia, Indian Ocean Islands, Pacific Islands, Australia

Discussion

New World examples of Fimbristylis cymosa are almost exclusively bicarpellate, with bifid styles; Old World Oceania examples are tricarpellate, with trifid styles, a form not covered in this treatment.

Selected References

None.

Lower Taxa

None.
... more about "Fimbristylis cymosa"
dark-brown +  and nearly black +
warty +  and striate to variously +
reticulate-honeycombed +
Robert Kral +
R. Brown +
shortened +
deciduous +
enlarged +
Fimbristylis obtusifolia +
involute +  and flat +
2mm;3mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
parallel +  and divergent +
terete +, rolled +  and plicate +
3-5-angled +, compressed +  and terete +
Fla. +, s Mexico +, Central America +, South America +, Africa +, Asia +, Indian Ocean Islands +, Pacific Islands +  and Australia +
0–50 m +
hypogynous +  and subtending +
biconvex +  and trigonous +
Sands of sea beaches, brackish sandy open sites, often disturbed, commonly just in from mangrove or on sandy road shoulders +
interrupted +  and continuous +
compound +  and simple +
usually shorter +  and short +
erect +  and spreading +
polystichous +
not excurrent +
with (1-)3-6(-30) bristles and/or scales +
Fruiting all year. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
adventitious +
basal +  and proximal +
notched;obtuse;ovate +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (?) +  and 0.2 cm2 mm <br />0.002 m <br /> (?) +
cylindric +
Illustrated +
yellowbrown +  and greenish brown +
single +, 1 +  and 80 +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
slender +
Fimbristylis melanospora +, Fimbristylis sintenisii +, Fimbristylis spathacea +  and Scirpus obtusifolius +
Fimbristylis cymosa +
Fimbristylis +
species +
not +  and rhizomatous +
plant +  and cespitose +